Patents by Inventor Crawford Renfrew Brown

Crawford Renfrew Brown has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and system for deterring animals
    Patent number: 9226492
    Abstract: An animal deterrence system projects polarized light in order to deter animals. The light may be plane polarized light and the polarization may be varied over time. The system is particularly suited to deterrence of birds, but may also find application in deterrence of other animals sensitive to polarization of light, such as bees and wasps. The system may be used on vineyards or orchards, or around airports, or in any other place where birds are problematic.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: January 5, 2016
    Assignee: INVISI SHIELD LIMITED
    Inventor: Crawford Renfrew Brown
  • METHOD AND SYSTEM FOR DETERRING ANIMALS
    Publication number: 20130180466
    Abstract: An animal deterrence system projects polarised light in order to deter animals. The light may be plane polarised light and the polarisation may be varied over time. The system is particularly suited to deterrence of birds, but may also find application in deterrence of other animals sensitive to polarisation of light, such as bees and wasps. The system may be used on vineyards or orchards, or around airports, or in any other place where birds are problematic.
    Type: Application
    Filed: July 13, 2011
    Publication date: July 18, 2013
    Applicant: Invisi Shield Limited
    Inventor: Crawford Renfrew Brown